Horseshoe calking and welding apparatus.



PATENTED MAY 19, 1908.

A. T. MOGREARYL HORSBSHOE GALKING AND WELDING APPARATUS.

APPLIOATION FILED JULY 29.1905.

{SHEETS-SHEET 1 JA W @Y ms Non-R15 PETERS col, WASHINGTON, n. c,

ABRAM T. MCCREARY, or FORTYFO'RT, PENNSYLVANIA.

HORSESHOE CALKING AND WELDING APPARATUS.

Specification of Letters Patent. Application filed July 29, 1905. SerialNo. 271,789.

Patented May 19, 1908.

To all whom it mcg concern:

Be it known that I, ABRAM T. MoCREARY, a citizen of the United States,and resident of Fortyfort, Luzerne county, State of Pennsylvania, haveinvented certain new and useful Improvements in Horseshoe Calking andVelding Apparatus, of which the following is a specification.

This invention relates to machines for securing calks to horse shoes andhas for its object the provision of improvements in apparatus of thecharacter described as will be hereinafter set forth.

Referring to the accompanying drawings, Figure 1 is a side elevation ofa calking machine; Fig. 2 is a section on the line ab of Fig. 1; Fig. 3is a vertical part section on the line c d of Fig. 2; Fig. 4 is avertical part section on the line ef of Fig. 2 showing the centeringgage in position; Fig. 5 is avertical part section on the line c-d ofFig. 2 showing the manner of welding a toe calk upon a shoe; Fig. 6 is aview of a toe calk ready for attachment to the shoe.

Referring to the drawings, it will be seen that the apparatus comprisesa table A above which is mounted a suitable plunger B adapted to beoperated by means of levers O located beneath the table. Also upon thetable is mounted a means D for securing the too calk in position, whilewithin guides E slides the centering gage F for centering the shoe sothat the toe clip will be turned up at the proper point. The toe calk 35is formed with the usual tang 36 which is driven into the heated shoe tohold the calk in position until it is welded. A means I is provided forsecuring a shoe in position to have the heel calks formed.

Having thus generally described the apparatus, the construction shownwill now be described in detail.

The table A may consist of a plane surface 1 supported in any suitablemanner as by legs 2. Extending above the table is a guide 3 havingvertical grooves 4 in which the plunger B is adapted to slide. Verticalmovement is imparted to the plunger by the system of leversC whichcomprises a lever 5 pivoted at the rear of the table and extendingbeyond the front thereof so that it may be conveniently grasped by anoperator standing in front of the apparatus. By means of the adjustablelink 6 the lever 5 is pivotally connected to the lever 7 which ispivoted near to the front of the table 8. A link 9 pivoted to the lever7 at 10 is pivoted at its upper end to the plunger B at 11 so that asthe forward end of the lever 5 is raised the plunger will be raised,while the lowering of the forward end of the lever 5 will cause alowering of the plunger. It is further to be noted that a series ofholes 12 and 13 are provided in the levers 7 and 5 respectively, wherebythe leverages of the levers 5 and 7 may be changed.

The means D for securing the toe calk and shoe in position comprises aguide piece 14 within which is mounted a member 15 movable to and froalong the surface of the table by means of a screw 16 and crank 17 andalso a slotted member 18 which is adjustablev along the table top andmay be secured in any desired position by means of a bolt and nut 19.The toe calk is entered and clamped between the opposing faces of thetwo members 15 and 18. The calk is so placed that it is held clear ofthe table by the members 15 and 18 and extends above the members so thatwhen the welding operation takes place the upper portion of the calkwill be flattened out upon the upper surfaces of the members so that alarge welding area will be presented to the shoe and a secure weldinsured. The manner of thus forming the weld, and the relative positionsof the several parts during the welding operation, are most clearlyillustrated in Fig. 5. Referring to said figure it will be seen that thetoe calk is so supported by the clamp that its sharpened edge is clearof the table or bed plate and out of contact with any part of theapparatus. Prior to effecting a weld the clamp members 15, 18, are soadjusted that the space separating them is of less width than thethickness of the base or widest portion of the calk and therefore whenthe latter is placed between said members it will extend a considerabledistance above the upper faces thereof, as shown in Fig. 5, and when theplunger is depressed such projecting section of the calk is expanded orflattened out over the upper ends of the clamp members and a relativelylarge welding surface is provided between. the calk and shoe. Durin thewelding operation the sharpened edge 3f the calk is thus held clear ofcon tact with the table or clamps and there is no danger of its beingdulled as is the case when the welding operation is carried on while thecalk is inserted, or forced, into a die.

Upon the member 18 is mounted a projection 20 adapted to be receivedwithin a recess 21 in the plunger. This projection in cooperation withthe recess operates to form the toe clip of the shoe and the thick nessof this clip may be determined by adjusting the member 18 and therebyregulating the clearance of the projection 20 in its recess 21. Thecentering gage F which has a slotted base 22 is adapted to slide in theguide E which may comprise ribs 24 and 25 secured to the top of thetable and is adapted to be secured in proper operating position withrelation to the plunger by means of a bolt 26 and thumb nut 27. Inaddition to its base portion the centering gage also comprises anupwardly projecting portion 28.

The means I for securing the shoe in position to have the heel call:formed may comprise guides 31 within which slides the verticallyreciprocating member 32 which is adapted to be operated by means of thecam 33 actuated by the handle 34. A hole 40 is formed in the plunger forthe reception of the punch M which may be secured by a set screw 42. Ahole 35 is formed in the table so that scale and hot portions of theiron may fall through and out of the way.

The operation of the apparatus may be described as follows. Thecentering gage having been properly adjusted in position and the member18 having been adjusted to such position that a suitable clearnessbetween the projection 20 and the plunger will be obtained, the heatedshoe, to which the toe calk has been attached temporarily in any wellknown manner, as by driving the tang into the hot shoe, is placedbeneath the plunger which has been raised to its uppermost position bymeans of the lever and the calk lies between the members 15 and 18 andagainst the gage. The member 15 is then moved towards the member 18until the toe call: is gripped, the call: being so placed as to extendbeyond the upper faces of the members 15 and 18 and to be clear of thetable. The plunger is then caused to descend by depressing the lever 5when the calk and shoe will be firmly pressed together forming a perfectweld, and as the upper faces of the members 15 and 18 form suitablewelding faces as shown, the metal of the call; will be flattened out onthose faces thereby increasing the area and security of the weld. Thedescent of the plunger also has the effect of forcing a portion of thematerial of the forward part of the shoe upwardly into the recessbetween the projection 20 and-the forming the clip 21.

Without being limited to the precise construction shown and described,what I claim 1s,

1. The combination with a table adapted to support a horse shoe andcalk, of means adjustable on said table for engaging the calk, a plungermounted above the table, and a suitable lever mechanism arranged belowthe table and connected with the plunger for moving it toward and fromthe table.

2. In a machine for welding calks to horse shoes, the combination of abed, a clamp on said bed adapted to supporta horse shoe and calk, themembers of said clamp when in use being separated a distance less thanthe width of the base of the calk, whereby a por tion of the calk willproject above the clamp, and means for applying pressure to the shoeopposite said calk holding clamp and expanding said projecting portionof the calk be tween the upper surface of the clamp and the shoewhilewelding the calk and shoe.

plunger thereby 3. In a machine for welding calks to horse shoes, thecombination of a bed, a clamp on said bed adapted to support a horseshoe and calk, the members of said clamp being separated a distance lessthan the width of the base of the calk, whereby the calk cannot passentirely into the clamp and the clamp being so proportioned that thesharpened edge of the calk engaged thereby will be held clear of thebed, a plunger mounted to reciprocate to and from said clamp, a handlever, and connections between said lever and plunger, the pressureexerted by said plunger when moved against the shoe acting to expand theprojecting section of the calk over the outer face of the clamp and weldsuch expanded portion to the shoe.

4. In a machine for welding calks to horse shoes, the combination of abed, a clamp on said bed adapted to support a horse shoe and calk, andhold the sharpened edge of the calk out of contact with the bed, onemember of said clamp being provided with an up .wardly extendingprojection 20, a plunger mounted to reciprocate to'and from said clampand provided at its lower end with a recess adapted to receive saidprojection 20 on the clamp, and means for reciprocating said plunger.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ABRAM T. MCCREARY.

Witnesses:

W. L. RAEDER, A. J. MULI-IALL.

